Litronic Inc.

The Irvine provider of Internet security posted a fourth-quarter net loss of $33.9 million, or $3.45 a share, which included a noncash charge of $31.4 million related to the purchase of Pulsar Data Systems Inc. in June 1999. The net loss for the year-earlier fourth quarter was $3.2 million, or 33 cents a share. Revenue declined 8% to $10.5 million. For the year, the net loss totaled $41.4 million, or $4.20 a share, compared with the prior year’s net loss of $7.1 million, or $1 a share. Revenue advanced 24% to $39.4 million.